The effect of electrolytic hydrogenation on the localized plastic deformation of high-chromium steel

2015 ◽  
Author(s):  
Anna V. Bochkareva ◽  
Svetlana A. Barannikova ◽  
Aleksey G. Lunev ◽  
Yulia V. Li ◽  
Lev B. Zuev
Keyword(s):  
Plastic Deformation ◽  
Chromium Steel ◽  
High Chromium ◽  
Electrolytic Hydrogenation ◽  
Localized Plastic Deformation

Changes in ultrasound velocity in the plastic deformation of high-chromium steel

2016 ◽  
Vol 46 (8) ◽  
pp. 552-557 ◽  
Author(s):  
S. A. Barannikova ◽  
A. V. Bochkareva ◽  
A. G. Lunev ◽  
G. V. Shlyakhova ◽  
L. B. Zuev
Keyword(s):  
Plastic Deformation ◽  
Ultrasound Velocity ◽  
Chromium Steel ◽  
High Chromium

Study of Plastic Flow of Aluminum Alloy Using Digital Speckle Photography

2016 ◽  
Vol 683 ◽  
pp. 118-124
Author(s):  
Anna V. Bochkareva ◽  
Aleksey G. Lunev ◽  
Svetlana A. Barannikova ◽  
Lev Zuev
Keyword(s):  
Plastic Deformation ◽  
Aluminum Alloy ◽  
Hydrogen Embrittlement ◽  
Plastic Flow ◽  
Flow Behavior ◽  
Local Strain ◽  
Image Technique ◽  
Electrolytic Hydrogenation ◽  
Digital Speckle ◽  
Localized Plastic Deformation

The effect of hydrogen embrittlement on the localized plastic deformation of aluminum alloy D1 was investigated. The studies were performed for the test samples of aluminum alloy subjected to electrolytic hydrogenation. It is found that the mechanical properties and localized plastic deformation parameters of aluminum alloy are affected adversely by hydrogen embrittlement. The hydrogenated counterpart of alloy has a lower degree of ductility relative to the original alloy; however, the plastic flow behavior of material remains virtually unaffected. The deformation diagrams were examined for the deformed samples of aluminum alloy. These are found to show all the plastic flow stages: the linear, parabolic and pre-failure stages would occur for the respective values of the exponent n from the Ludwik-Holomon equation. Using digital speckle image technique, the local strain patterns were being registered for the original alloy D1 and the counterpart subjected to electrolytic hydrogenation for 100 h.

scholarly journals Analysis of Plastic Flow Localization in Bimetal Electrolytically Saturated with Hydrogen

2018 ◽  
Vol 7 (2.23) ◽  
pp. 475
Author(s):  
S Barannikova ◽  
Yu. Li ◽  
A Malinovskiy ◽  
L Zuev
Keyword(s):  
Plastic Deformation ◽  
Electrochemical Cell ◽  
Correlation Method ◽  
Image Correlation ◽  
Low Carbon ◽  
Plastic Yielding ◽  
Flow Localization ◽  
Hydrogen Saturation ◽  
Electrolytic Hydrogenation ◽  
Localized Plastic Deformation

Plastic deformation of bimetal compound of austenitic stainless and low-carbon construction steels, resistant to corrosion, is localized through the digital image correlation method upon the uniaxial tension of sample. The evolution of zones of plastic deformation in bimetal is inspected upon the onset of the process and is exposed to hydrogen saturation in a three-electrode electrochemical cell at a controlled constant cathode potential for 6 hours. Localized plastic deformation zones are found to form and evolve during the tension of bimetal samples both at the onset and after 6 hour of the electrolytic hydrogenation throughout the plastic yielding in the primary, protective and transitional layers of the bimetal. The bimetal fracture is initiated by stress concentrated in the bimetal transition layer. Nucleation and propagation of a crack is observed at early work-hardening stages. The fracture of bimetal after hydrogenation is established to be more ductile as compared with precursor.  

scholarly journals CHANGES IN ULTRASONIC VELOCITY AT HYDROGEN EMBRITTLEMENT OF HIGH-CHROMIUM STEEL

2018 ◽  
pp. 187-196
Author(s):  
S. A. Barannikova ◽  
A. G. Lunev ◽  
A. P. Malinovskii ◽  
L. B. Zuev
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Ultrasonic Velocity ◽  
Piezoelectric Transducer ◽  
Chromium Steel ◽  
Deformation Curve ◽  
Corrosion Resistant ◽  
High Chromium ◽  
Digital Oscilloscope ◽  
Electrolytic Hydrogenation

The paper presents research into changes in the ultrasonic velocity (Rayleigh wave propagation) at plastic deformation of the type 40Kh13 corrosion-resistant high-chromium steel with a sorbitol structure after high-temperature tempering (original state) and after electrolytic hydrogenation saturation for 12 and 24 h. The method implementation for measuring Rayleigh wave propagation includes a periodic generation of square-waves 100 nm long. Measurements are performed at the input of a radiating piezoelectric transducer including the wave propagation over the specimen using a receiving piezoelectric transducer connected to a digital oscilloscope. Measurements show changes not only in the deformation curve at uniaxial tension but also in the dependence between the ultrasonic velocity and deformation.

scholarly journals ULTRASOUND VELOCITY VARIATION AT PLASTIC DEFORMATION OF HIGH-CHROMIUM STEEL

2016 ◽  
Vol 59 (8) ◽  
pp. 558-564
Author(s):  
S. A. Barannikova ◽  
A. V. Bochkareva ◽  
A. G. Lunev ◽  
G. V. Shlyakhova ◽  
L. B. Zuev
Keyword(s):  
Plastic Deformation ◽  
Ultrasound Velocity ◽  
Chromium Steel ◽  
Velocity Variation ◽  
High Chromium

AISI TYPE 440B

Alloy Digest ◽  
1969 ◽  
Vol 18 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Heat Treating ◽  
Chromium Steel ◽  
Ball Bearings ◽  
High Carbon ◽  
High Chromium ◽  
Steel Mills ◽  
Aisi Type

Abstract AISI Type 440B is a hardenable high-carbon high-chromium steel recommended stainless for cutlery, valve parts, ball bearings, pivot pins, etc. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-223. Producer or source: Stainless steel mills.

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